SIGs
Special Interest Groups
Special Interest Group
SIG1: Offshore Observations
The source region of the next large subduction zone earthquake in Cascadia is offshore where few instruments are located. Enhancing the quality and quantity of offshore geophysical observations in Cascadia is critical to long-term efforts of advancing CRESCENT science goals and estimating the seismic hazard. The Offshore Observations special interest group will gather broad community input on observational needs and priorities and will identify specific areas for accelerated progress through coordination and the development of collaborations that link the academic community, federal agencies, private companies, and international partners.
Meet The Team
SIG1 Leadership
David Schmidt
University of Washington
dasc@uw.edu
Douglas Toomey
University of Oregon
drt@uoregon.edu
William Wilcock
University of Washington
wilcock@uw.edu
Special Interest Group
SIG2: Ground Motion Modeling
Shaking from earthquakes poses a hazard to both people and the built environment. Many factors determine how strong shaking will be in the Pacific Northwest during future earthquakes. The Ground Motion Modeling SIG seeks to advance our models of earthquake ground shaking to include state-of-the-art knowledge within field. This includes integrating information from CRESCENT’s cutting-edge research in the CVM, CFM, and DET groups, which all contribute to advancing our knowledge of the hazards posed by ground shaking. The SIG will also work closely with state and federal agencies, as well as community partners, to translate these advances into usable shaking estimates and seismic hazard models.
Shaking expected for a M9 earthquake, from “Ensemble ShakeMaps for magnitude 9 earthquakes on the Cascadia Subduction Zone” by Wirth et al. (2021).
Meet The Team
SIG2 Leadership
alex grant
U.S. Geological Survey
agrant@usgs.gov
Valerie Sahakian
P&A Program Lead
vjs@uoregon.edu
Erin Wirth
U.S. Geological Survey
ewirth@usgs.gov
Special Interest Group
SIG3: Ground Failure
Shallow subsurface properties in the Pacific Northwest not only influence the characteristics of ground shaking from large earthquakes (SIG2) but also control coseismic cascading hazards, e.g., landslides, liquefaction, lateral spreading and ground failure. Quantifying these subsurface properties is critical owing to the extensive alluvial deposits, unstable mountainous terrain, and significant precipitation in the region. The purpose of the Ground Failure SIG is to appropriately steer this shallow hazard focus and help translate related working group outputs into societal relevant products, while working directly with federal (e.g., USGS) and state agencies (e.g., CGS, DOGAMI, and WA DNR) for whom ground failure estimates are a priority.
Meet The Team
SIG3 Leadership
Ben Leshchinsky
Oregon State University
Ben.Leshchinsky@oregonstate.edu
Michael Olsen
Oregon State University
michael.olsen@oregonstate.edu
Pieter-Ewald Share
Oregon State University
pieter.share@oregonstate.edu
Special Interest Group
SIG4: Cascadia Fluids Model
Fluids are ubiquitous in the Earth’s crust and play a fundamental role in subduction zone processes. These fluids affect near-surface landslide behavior and liquefaction hazards and can trigger earthquakes deep inside the Earth. They also facilitate the melting of rock that feeds our active volcanoes. The Cascadia Fluids Model SIG will work towards constructing a community model that maps the presence of fluids using different types of geophysical data. This SIG will coordinate closely with other model building efforts such as CVM, CFM and CSSS as well as with SIG3.
Meet The Team
SIG4 Leadership
Cailey Condit
University of Washington
ccondit@uw.edu
Pieter-Ewald Share
Oregon State University
pieter.share@oreognstate.edu
Amanda Thomas
Science Planning Lead
amthomas@uoregon.edu
